drm/nve0/fb/gddr5: fix behaviour of lp3 setting

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/gddr5.c b/drivers/gpu/drm/nouveau/core/subdev/fb/gddr5.c
index 34f9605ffee61321d381d6c3ed7e552f8918c51b..012c1eab846711aaa6f36a11a4e43f70978ab019 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/fb/gddr5.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/gddr5.c
@@ -78,6 +78,9 @@ nouveau_gddr5_calc(struct nouveau_ram *ram)
        ram->mr[3] &= ~0x020;
        ram->mr[3] |= (rq & 0x01) << 5;
 
+       /*XXX: LP3, where's the bit?  Let's hardcode to off for now */
+       ram->mr[5] &= ~0x004;
+
        if (!vo)
                vo = (ram->mr[6] & 0xff0) >> 4;
        if (ram->mr[6] & 0x001)

diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
index bc86cfd084f66c106c4a46980212a59cdde47dad..0fa983ffc4d4b1eea0244d443a3d3eeca61cf5f5 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
@@ -528,7 +528,7 @@ nve0_ram_calc_gddr5(struct nouveau_fb *pfb, u32 freq)
        ram_mask(fuc, mr[8], 0xfff, ram->base.mr[8]);
        ram_nsec(fuc, 1000);
        ram_mask(fuc, mr[1], 0xfff, ram->base.mr[1]);
-       ram_mask(fuc, mr[5], 0xfff, ram->base.mr[5]);
+       ram_mask(fuc, mr[5], 0xfff, ram->base.mr[5] & ~0x004); /* LP3 later */
        ram_mask(fuc, mr[6], 0xfff, ram->base.mr[6]);
        ram_mask(fuc, mr[7], 0xfff, ram->base.mr[7]);
 
@@ -582,7 +582,7 @@ nve0_ram_calc_gddr5(struct nouveau_fb *pfb, u32 freq)
        /* MR5: (re)enable LP3 if necessary
         * XXX: need to find the switch, keeping off for now
         */
-       ram_mask(fuc, mr[5], 0x00000004, 0x00000000);
+       ram_mask(fuc, mr[5], 0xfff, ram->base.mr[5]);
 
        if (ram->mode != 2) {
                ram_mask(fuc, 0x10f830, 0x01000000, 0x01000000);